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NSR database version of April 11, 2024.

Search: Author = K.M.Varier

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2021VI08      Phys.Rev. C 104, 054602 (2021)

A.C.Visakh, E.Prasad, P.V.Laveen, M.Shareef, A.Shamlath, S.Nath, N.Madhavan, J.Gehlot, Gonika, R.Biswas, A.Parihari, J.Khuyagbaatar, B.Lommel, B.Kindler, A.M.Vinodkumar, B.R.S.Babu, S.Sanila, K.M.Varier, S.Appannababu

Fusion studies in 16O + 142, 150Nd reactions at energies near the Coulomb barrier

NUCLEAR REACTIONS 142Nd(16O, X), E=60-104 MeV; 150Nd(16O, X), E=56-104 MeV from the 15-UD Pelletron accelerator at IUAC-New Delhi; measured reaction products using the Heavy Ion Reaction Analyzer (HIRA), with electromagnetic configuration of Q1Q2-ED1-M-MD-ED2-Q3Q4 and two silicon surface barrier detectors (SSBDs), evaporation residues (ERs) using position sensitive multiwire proportional counter (MWPC), two-dimensional ΔE versus ToF spectra, σ(E) for ERs; deduced fusion σ(E). 148Nd(18O, X), 142,144,148Nd(16O, X), E-VB=-10-35 MeV analyzed previous and present experimental measurements for reduced fusion σ(E). Comparison with coupled channels calculations using CCFULL code, and with 1D-BPM predictions using Akyuz-Winther (AW) potential parameters.

doi: 10.1103/PhysRevC.104.054602
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6412.


2020JI03      Phys.Rev. C 101, 024611 (2020)

P.Jisha, A.M.Vinodkumar, B.R.S.Babu, S.Nath, N.Madhavan, J.Gehlot, A.Jhingan, T.Banerjee, Ish Mukul, R.Dubey, N.Saneesh, K.M.Varier, E.Prasad, A.Shamlath, P.V.Laveen, M.Shareef

Evaporation residue measurements of compound nuclei in the A ≈ 200 region

NUCLEAR REACTIONS 181Ta(16O, X), (18O, X), E=68-110 MeV; measured reaction products, time-of-flight and E-ΔE, evaporation residue σ(E). Comparison with coupled-channel (CC) calculations using CCFULL code. 181Ta(16O, X), (18O, X), E(cm)=60-120 MeV; 180Hf(19F, X), E(cm)=70-115 MeV; analyzed present and previous experimental σ(E) data using the HIVAP code. 181Ta(12C, X), (13C, X), (16O, X), (18O, X), 174,176Yb, 181Ta, 182,184W(16O, X), E(cm)/VB=0.9-1.5; analyzed experimental data in literature for reduced cross sections of evaporation residues. 204,206,208Pb(12C, X), 180Hf, 181Ta, 197Au, 194,198Pt(19F, X), 181Ta, 188,192Os, 197Au(18O, X), 181Ta, 184,186W, 188,192Os, 197Au(16O, X), E not given; analyzed experimental data in literature for charge products ZpZt and neutron numbers of compound nuclei, fission barriers scaling factors, ratio of mass asymmetry values, and fusion probabilities.

doi: 10.1103/PhysRevC.101.024611
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6379.


2016SH01      Nucl.Phys. A945, 67 (2016)

A.Shamlath, M.Shareef, E.Prasad, P.Sugathan, R.G.Thomas, A.Jhingan, S.Appannababu, A.K.Nasirov, A.M.Vinodkumar, K.M.Varier, C.Yadav, B.R.S.Babu, S.Nath, G.Mohanto, Ish Mukul, D.Singh, S.Kailas

Fission fragment mass distribution studies in 30Si + 180Hf reaction

NUCLEAR REACTIONS 180Hf(30Si, F), E=128-148 MeV;194Pt(16O, F), E not given; measured fission fragments using two large area position-sensitive MWPCs; deduced fragment mass distribution; calculated fragment mass distribution, potential energy surface using CCFULL code, ratio quasifission σ to capture σ using DNS (Double Nuclear System) model.

doi: 10.1016/j.nuclphysa.2015.09.011
Citations: PlumX Metrics


2015LA18      J.Phys.(London) G42, 095105 (2015)

P.V.Laveen, E.Prasad, N.Madhavan, S.Pal, J.Sadhukhan, S.Nath, J.Gehlot, A.Jhingan, K.M.Varier, R.G.Thomas

Fusion measurements for the 18O + 194Pt reaction and search for neutron shell closure effects

NUCLEAR REACTIONS 194Pt(18O, X)212Rn, E=77.7-105.3 MeV; measured reaction products, fission fragments; deduced evaporation residue σ, fission fragments σ(θ). Comparison with statistical model analysis of the evaporation residue data employing shell-corrected free energy fission barrier height.

doi: 10.1088/0954-3899/42/9/095105
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6261.


2015SA16      Phys.Rev. C 91, 044621 (2015)

R.Sandal, B.R.Behera, V.Singh, M.Kaur, A.Kumar, G.Kaur, P.Sharma, N.Madhavan, S.Nath, J.Gehlot, A.Jhingan, K.S.Golda, H.Singh, S.Mandal, S.Verma, E.Prasad, K.M.Varier, A.M.Vinodkumar, A.Saxena, J.Sadhukhan, S.Pal

Probing nuclear dissipation via evaporation residue excitation functions for the 16, 18O+198Pt reactions

NUCLEAR REACTIONS 198Pt(16O, 16O), (16O, X)214Rn*, E=78.0-105.6 MeV; 198Pt(18O, 18O), (18O, X)216Rn*, E=77.8-105.4; measured evaporation residues (ER), scattered 16,18O spectra, TOF spectrum, angular distributions of ERs, σ(E) for ERs and fusion using HYRA analyzer at IUAC-New Delhi 15 UD Pelletron facility. Comparison with statistical model calculations of compound nuclear decay with Kramers' fission width.

doi: 10.1103/PhysRevC.91.044621
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6263.


2012PR04      Nucl.Phys. A882, 62 (2012)

E.Prasad, K.M.Varier, R.G.Thomas, A.M.Vinodkumar, K.Mahata, S.Appannababu, P.Sugathan, K.S.Golda, B.R.S.Babu, A.Saxena, B.V.John, S.Kailas

Fission fragment angular distribution measurements for 16O + 194Pt reaction at energies near the Coulomb barrier

NUCLEAR REACTIONS 194Pt(16O, F), E=79-90 MeV; measured fission E(fragment), I(fragment, θ); calculated σ(θ), fission barrier, ER σ, neutron multiplicity using SSPM (saddle point statistical model) PACE code and RFRM (rotating FR model) moments of inertia; deduced fission fragments σ(θ), σ, fission probability, fission barrier, level density parameters.

doi: 10.1016/j.nuclphysa.2012.03.005
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6182.


2011PR13      Phys.Rev. C 84, 064606 (2011)

E.Prasad, K.M.Varier, N.Madhavan, S.Nath, J.Gehlot, S.Kalkal, J.Sadhukhan, G.Mohanto, P.Sugathan, A.Jhingan, B.R.S.Babu, T.Varughese, K.S.Golda, B.P.A.Kumar, B.Satheesh, S.Pal, R.Singh, A.K.Sinha, S.Kailas

Evaporation residue excitation function measurement for the 16O + 194Pt reaction

NUCLEAR REACTIONS 194Pt(16O, X)210Rn*, E=75.4, 79.5, 83.7, 87.8, 91.9, 96.0, 101.1, 103.1 MeV; measured particle spectra of evaporation residues, time of flight, energy loss, σ(θ) of evaporation residues, evaporation residue cross sections. Hybrid Recoil Mass Analyzer (HYRA). Data analyzed with statistical model calculations using KramersĀ formula. PACE3 results. 197Au(16O, X)213Fr*, E(cm)=70-130 MeV; 197Au(18O, X)215Fr*, E(cm)=60-120 MeV; analyzed σ(E) data with statistical model calculations assuming Bohr-Wheeler and Kramers fission widths.

doi: 10.1103/PhysRevC.84.064606
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6117.


2010PR05      Phys.Rev. C 81, 054608 (2010)

E.Prasad, K.M.Varier, R.G.Thomas, P.Sugathan, A.Jhingan, N.Madhavan, B.R.S.Babu, R.Sandal, S.Kalkal, S.Appannababu, J.Gehlot, K.S.Golda, S.Nath, A.M.Vinodkumar, B.P.A.Kumar, B.V.John, G.Mohanto, M.M.Musthafa, R.Singh, A.K.Sinha, S.Kailas

Conclusive evidence of quasifission in reactions forming the 210Rn compound nucleus

NUCLEAR REACTIONS 186W(24Mg, X)210Rn, E=111-125 MeV; 194Pt(16O, X)210Rn, E=75-102 MeV; measured fission fragment mass ratio distributions and mass ratio widths. Comparison with coupled-channel calculations.

doi: 10.1103/PhysRevC.81.054608
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6110.


2010PR08      Nucl.Phys. A834, 208c (2010)

E.Prasad, K.M.Varier, B.R.S.Babu, N.Madhavan, K.S.Golda, S.Nath, B.P.A.Kumar, J.J.Das, J.Gehlot, P.Sugathan, A.Jhingan, A.K.Sinha, B.R.Behera, R.Sandal, H.Singh, R.Singh, R.G.Thomas, S.Kailas

Study of fission fragment mass distribution for 16O + 194Pt reaction

NUCLEAR REACTIONS 194Pt(16O, F), E=75-102 MeV; measured fission fragment mass and angular distributions using TOF method. Comparison with calculations.

doi: 10.1016/j.nuclphysa.2009.12.042
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6110.


2009SA03      Nucl.Phys. A817, 35 (2009)

K.P.Santhosh, V.B.Jose, A.Joseph, K.M.Varier

Heavy-ion fusion cross sections and barrier distributions for 12C, 16O, 28Si and 35Cl on 92Zr

NUCLEAR REACTIONS 92Zr(12C, X), E(cm)=27-45 MeV; 92Zr(16O, X), E(cm)=38-70 MeV; 92Zr(28Si, X), E(cm)=64-90 MeV; 92Zr(35Cl, X), E(cm)=76-96 MeV; calculated fusion σ, barrier distribution using a one-dimensional barrier penetration model and comparison with data.

doi: 10.1016/j.nuclphysa.2008.11.008
Citations: PlumX Metrics


2008AB15      Pramana 70, 633 (2008)

K.K.Abdullah, N.Ramachandran, K.K.Nair, B.R.S.Babu, A.Joseph, R.Thomas, K.M.Varier

Attenuation studies near K-absorption edges using Compton scattered 241Am gamma rays

ATOMIC PHYSICS Sm, Eu, Gd, Tb, Dy, Er(γ, γ'), E=49.38-57.96 keV; measured attenuation coefficients near K-absorption edges.

doi: 10.1007/s12043-008-0024-1
Citations: PlumX Metrics


2008AJ01      Phys.Rev. C 77, 021601 (2008)

B.P.Ajitkumar, K.M.Varier, B.V.John, A.Saxena, B.K.Nayak, D.C.Biswas, R.G.Thomas, S.Kailas

Fission fragment anisotropies for the 13C+235U system at near-Coulomb barrier energies

NUCLEAR REACTIONS 235U(13C, X), E(cm)=55-85 MeV; measured fission fragment spectra, anisotropies, excitation functions. 236U(12C, X); compared fission anisotropies.

doi: 10.1103/PhysRevC.77.021601
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6032.


2008AJ02      Phys.Rev. C 77, 21601 (2008)

B.P.Ajitkumar, K.M.Varier, B.V.John, A.Saxena, B.K.Nayak, D.C.Biswas, R.G.Thomas, S.Kailas

Fission fragment anisotropies for the 13C + 235U system at near-Coulomb barrier energies

NUCLEAR REACTIONS 235U(13C, f), E=59.7-79.6 MeV; measured products; deduced σ, σ(E). Data were imported from EXFOR entry D6032.

doi: 10.1103/physrevc.77.021601
Citations: PlumX Metrics


2008SH21      Phys.Lett. B 670, 99 (2008)

P.D.Shidling, N.Madhavan, V.S.Ramamurthy, S.Nath, N.M.Badiger, S.Pal, A.K.Sinha, A.Jhingan, S.Muralithar, P.Sugathan, S.Kailas, B.R.Behera, R.Singh, K.M.Varier, M.C.Radhakrishna

Experimental signature of entrance channel effect in heavy mass region via evaporation residue cross section and spin distribution measurements

NUCLEAR REACTIONS 184W(16O, F), 181Ta(19F, F), E*=50-90 MeV; measured Eγ, Iγ, (particle)γ-coin, Evaporation Residue cross sections and γ multiplicity distributions.

doi: 10.1016/j.physletb.2008.10.044
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6018.


2006SH28      Phys.Rev.C 74, 064603 (2006)

P.D.Shidling, N.M.Badiger, S.Nath, R.Kumar, A.Jhingan, R.P.Singh, P.Sugathan, S.Muralithar, N.Madhavan, A.K.Sinha, S.Pal, S.Kailas, S.Verma, K.Kalita, S.Mandal, R.Singh, B.R.Behera, K.M.Varier, M.C.Radhakrishna

Fission hindrance studies in 200Pb: Evaporation residue cross section and spin distribution measurements

NUCLEAR REACTIONS 184W(16O, xnyp), E=84, 92, 100, 108, 116, 120 MeV; measured Eγ, Iγ, fusion and evaporation residue σ; deduced spin distributions for residual nuclei, fission hindrance.

doi: 10.1103/PhysRevC.74.064603
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6049.


2005KU38      Phys.Rev. C 72, 067601 (2005); Erratum Phys.Rev. C 73, 039901 (2006)

B.P.A.Kumar, K.M.Varier, R.G.Thomas, K.Mahata, B.V.John, A.Saxena, H.G.Rajprakash, S.Kailas

Fission fragment angular distributions of the 13C + 232Th system at near-barrier energies

NUCLEAR REACTIONS 232Th(13C, X), E=55-75 MeV; measured fission fragment angular distributions, anisotropies, fusion σ.

doi: 10.1103/PhysRevC.72.067601
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6042.


1999VA20      Pramana 53, 529 (1999)

K.M.Varier, A.M.Vinodkumar, N.V.S.V.Prasad, P.V.M.Rao, D.L.Sastry, L.T.Baby, M.C.Radhakrishna, N.G.Puttaswamy, J.J.Das, P.Sugathan, N.Madhavan, A.K.Sinha, D.O.Kataria

Transfer Measurements for the Ti + Ni Systems at Near Barrier Energies

NUCLEAR REACTIONS 64Ni(46Ti, X), (48Ti, X), E=120-142 MeV; measured one-, two-neutron transfer probability; deduced effect on fusion σ.

doi: 10.1007/s12043-999-0025-8
Citations: PlumX Metrics


1997KA48      Phys.Rev. C56, 1902 (1997)

D.O.Kataria, A.K.Sinha, J.J.Das, N.Madhavan, P.Sugathan, L.T.Baby, I.Mazumdar, R.Singh, C.V.K.Baba, Y.K.Agarwal, A.M.Vinodkumar, K.M.Varier

One- and Two-Nucleon Transfer in the 28Si + 68Zn System at Energies Below the Coulomb Barrier

NUCLEAR REACTIONS, ICPND 68Zn(28Si, 29Si), (28Si, 30Si), (28Si, 27Al), (28Si, 26Mg), E=65-83 MeV; measured target-like fragment mass, E, yield; deduced two-nucleon transfer related features. 68Zn(28Si, X), E=50-70 MeV; calculated fusion σ(E). 28Si, 68Zn levels deduced β2, β3. Recoil mass separator. Semiclassical theory, coupled-channels calculations.

doi: 10.1103/PhysRevC.56.1902
Citations: PlumX Metrics


1997SI26      J.Phys.(London) G23, 1331 (1997)

A.K.Sinha, L.T.Baby, N.Badiger, J.J.Das, S.K.Hui, D.O.Kataria, R.G.Kulkarni, N.Madhavan, P.V.M.Rao, I.Majumdar, M.C.Radhakrishna, N.V.S.V.Prasad, N.G.Puttaswamy, P.Shakeeb, R.Singh, D.L.Shastry, P.Sugathan, V.Tripathi, K.M.Varier, A.M.Vinodkumar

Sub-Barrier Few-Nucleon Transfer Reaction and Channel Coupling Effects in Heavy Ion Fusion

NUCLEAR REACTIONS, ICPND 64Ni(32S, X), E not given; measured transfer reaction probabilities; 64Ni(28Si, X), E(cm)=45-65 MeV; 144Nd(28Si, X), E=110-135 MeV; measured fusion, transfer σ. HIRA recoil mass separator. Coupled-channel calculations.

doi: 10.1088/0954-3899/23/10/022
Citations: PlumX Metrics


1996AC04      Nucl.Phys. A609, 91 (1996)

D.Ackermann, P.Bednarczyk, L.Corradi, D.R.Napoli, C.M.Petrache, P.Spolaore, A.M.Stefanini, K.M.Varier, H.Zhang, F.Scarlassara, S.Beghini, G.Montagnoli, L.Muller, G.F.Segato, F.Soramel, C.Signorini

Cross Sections and Average Angular Momenta in the Fusion of 28Si + 94,100Mo and 58,64Ni + 64Ni

NUCLEAR REACTIONS 100,94Mo(28Si, X), E=85-118 MeV; 64Ni(58Ni, X), (64Ni, X), E=170-220 MeV; measured (evaporation residues)γ-coin; deduced fusion σ(E) mean-spin distribution <l>(E) around, below the Coulomb barrier. Coupled-channel calculations. Recoil mass spectrometer.

doi: 10.1016/S0375-9474(96)00282-5
Citations: PlumX Metrics


1996KA55      Nucl.Instrum.Methods Phys.Res. A372, 311 (1996)

D.O.Kataria, J.J.Das, N.Madhavan, P.Sugathan, A.K.Sinha, G.Dayanand, M.C.Radhakrishna, A.M.Vinodkumar, K.M.Varier, M.Singh, N.V.S.V.Prasad

A Modular Focal Plane Detector System for the Heavy Ion Reaction Analyzer at NSC, New Delhi

NUCLEAR REACTIONS 48Ti(32S, X), E=80 MeV; 68Zn(28Si, X), E=78 MeV; 60Ni(48Ti, X), E=160 MeV; 27Al(28Si, X), E=150 MeV; measured evaporation residue energy spectra; deduced detector characteristics. Low pressure multi-wire proportional counter plus split anode ionization detector.

doi: 10.1016/0168-9002(95)01242-7
Citations: PlumX Metrics


1996PR05      Nucl.Phys. A603, 176 (1996)

N.V.S.V.Prasad, A.M.Vinodkumar, A.K.Sinha, K.M.Varier, D.L.Sastry, N.Madhavan, P.Sugathan, D.O.Kataria, J.J.Das

Study of Transfer Channel Coupling and Entrance Channel Effects for the Near and Sub-Barrier Fusion of 46Ti + 64Ni, 50Ti + 60Ni and 19F + 93Nb Systems

NUCLEAR REACTIONS 64Ni(46Ti, X), E(cm)=72.7-92.3 MeV; 60Ni(50Ti, X), E(cm)=72.6-90.8 MeV; 93Nb(19F, X), E(cm)=44.4-59.4 MeV; measured σ(evaporation residue), σ(E). 93Nb(19F, X), E=57, 60 MeV; measured σ(E), transfer reaction. Self-supporting foils, recoil mass separator, multi-wire proportional counter.

doi: 10.1016/0375-9474(96)00110-8
Citations: PlumX Metrics


1996VI01      Phys.Rev. C53, 803 (1996)

A.M.Vinodkumar, K.M.Varier, N.V.S.V.Prasad, D.L.Sastry, A.K.Sinha, N.Madhavan, P.Sugathan, D.O.Kataria, J.J.Das

Absence of Isotopic Dependence in the Sub-Barrier Fusion of 48Ti + 58,60,64Ni System

NUCLEAR REACTIONS, ICPND 48Ti(58Ni, X), (60Ni, X), (64Ni, X), E=72-95 MeV; measured Eγ, Iγ, evaporation residue σ; deduced average spin distributions, fusion σ(E). Recoil mass seperator, enriched targets. Coupled-channels calculations.

doi: 10.1103/PhysRevC.53.803
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6152.


1996VI05      Phys.Rev. C54, 791 (1996)

A.M.Vinodkumar, A.K.Sinha, N.V.S.V.Prasad, K.M.Varier, P.Sugathan

Fusion Systematics in the Barrier Region using the Neutron Flow Model

NUCLEAR STRUCTURE A=64-208; analyzed heavy-ion induced fusion reaction data for targets from 64Ni-208Pb; deduced intersurface distance, barrier distribution width related features.

doi: 10.1103/PhysRevC.54.791
Citations: PlumX Metrics


1995AC01      Nucl.Phys. A583, 129c (1995)

D.Ackermann, F.Scarlassara, P.Bednarczyk, S.Beghini, L.Corradi, G.Montagnoli, L.Muller, D.R.Napoli, C.M.Petrache, K.M.Varier, F.Soramel, P.Spolaore, A.M.Stefanini, G.F.Segato, C.Signorini, H.Zhang

Mean Angular Momenta in Heavy Ion Fusion

NUCLEAR REACTIONS, ICPND 112Cd(16O, X), 94,100Mo(28Si, X), 64Ni(64Ni, X), (58Ni, X), E(cm) ≈ 44-110 MeV; measured fusion σ(E). Coupled-channels analyses.

doi: 10.1016/0375-9474(94)00646-5
Citations: PlumX Metrics


1989VA12      Nucl.Instrum.Methods Phys.Res. A280, 428 (1989)

K.M.Varier, M.P.Unnikrishnan

Elastic and Inelastic Scattering of 59.54 keV Gamma Rays

NUCLEAR REACTIONS 27Al, Cu, Mo, Yb, Ta, 197Au, Pb(γ, γ), E=59.54 keV; measured σ(θ). S-matrix calculations.

ATOMIC PHYSICS 27Al, Cu, Mo, Yb, Ta, 197Au, Pb(γ, γ), E=59.54 keV; measured σ(θ). S-matrix calculations.

doi: 10.1016/0168-9002(89)90947-9
Citations: PlumX Metrics


1987KA43      Phys.Rev. A36, 5626 (1987)

P.P.Kane, G.Basavaraju, S.M.Lad, K.M.Varier, L.Kissel, R.H.Pratt

Inelastic and Anomalous Elastic Scattering of 88.03-keV γ Rays

ATOMIC PHYSICS 27Al, 197Au, Pb, 209Bi(γ, γ), (γ, γ'), E=88.03 keV; measured σ(θ); deduced resonance Raman, Compton scattering features.

doi: 10.1103/PhysRevA.36.5626
Citations: PlumX Metrics


1979BA55      Pramana 12, 665 (1979)

G.Basavaraju, P.P.Kane, K.M.Varier

Elastic Scattering of 1.17 and 1.33 MeV Gamma Rays by Molybdenum, Tantalum and Lead

NUCLEAR REACTIONS Pb, Ta, Mo(γ, γ), E=1.17, 1.33 MeV; measured σ(θ).

doi: 10.1007/BF02846856
Citations: PlumX Metrics


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